personate
verb (used with object)
to act or portray (a character in a play, a part, etc.).
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Siberia at least, if it was discovered that I had been personating a Russian officer and fighting duels in his name.
From By Right of Sword by Arthur W. (Arthur Williams) Marchmont